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# Angles in a triangle sum to 180° proof

Learn the formal proof that shows the measures of interior angles of a triangle sum to 180°. Created by Sal Khan.

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# Angles in a triangle sum to 180° proof

Current time:0:00Total duration:4:28

0 energy points

Learn the formal proof that shows the measures of interior angles of a triangle sum to 180°. Created by Sal Khan.